I heard (again--sigh) that classical systems don't train live.  Maybe some don't.  Maybe most don't.  This is the list of the types of sparring that we did under Dave.  I don't know for sure how much was introduced by him and how much was already in the system.

Kumite- was straight up non-contact karate point sparring.

Tachiwaza randori- Judo throwing randori.

Newaza randori- Grappling.  It was under judo rules, but sometimes we would ignore the 25-second osaekomi ippon and keep going.  We didn't incorporate leg locks.  They were in the syllabus, but we played by judo rules.  I incorporate them now when I play.

Judo randori- combining both of the above

Sparring- was controlled contact but all strikes, throws, locks and immobilizations were allowed.  Contact was graded up to what we called 'stiff'.  Beginners would work light contact.

Jujutsu randori.  We had two different things called JJ randori.  One was counter assault.  Uke would give a committed attack and tori would take him out.  I now call this drill take-outs.  The second, cooler version was similar to 'sparring', above.  All techniques allowed.  Stiff contact (but it had to be controlled-- you wanted people to know they were open, you wanted it to hurt and impede, but still be okay for work the next morning) but it started at contact range.  Chest touching chest, chest touching back or chest touching flank.
There are a lot of reasons I love that drill.  You are in range for everything-- strikes (including head butts and some very interesting kicks) gouges, locks, throws and puppetmastering. Which means that everything you do has to be coordinated.  It is so fast and so close that if there are any divisions in your mind between classes of technique or offense and defense you will not be able to keep up.
Can't do that one in a seminar format.  Everyone needs superb breakfall skills; there has to be a level of trust and control (you will remember stiff contact from a head butt.  You might not be able to remember uncontrolled contact) and people who haven't been exposed to that tend to panic.


There are other live trainings.  Stuff not from Dave:

With Mac:
Boxing

Contact stick fighting- Padded sticks and hockey gear

Mixed weapons- Level of contact depending on the weapon and the armor... but, yeah.  Fun.

From the Agency:
ConSim- Full blown scenarios with all force options and policy and force law in play.  Critical for developing judgment.

Stuff I've added:
The One-step- In a lot of ways this is the introductory version of JJ randori.  The big advantage is that you can do it safely with strangers even in environmental fighting.  It's live, but it misses the pain, fear and most of the effort (not quite the right word) of fighting.  How about very good live training but very low resistance?  That about sums it up.

Rolling Dirty- Grappling with the strikes, gouges and normally illegal locks in.  Have to control contact because, obviously, hammering the brainstem or rupturing an eardrum will really mess up someone's day.

All of these have value and you learn something. And with all of them you completely fail to learn other things.  Train hard, but don't fall in love with a method.  Training for dangerous things will never have a one-to-one correlation with doing dangerous things. Not unless the training has the same casualty rate as the event.